Valve-controlling mechanism for gas-engines.



PATENTED APR. 3, 1906 H. J. PODLBSAK. VALVE CONTROLLING MECHANISM FOR GAS ENGINES.

APPLIOATIOH FILED OUT. 22, 1904.

UNITED s-rarns relrass? orator HENRY Jo's-Ere routes tit; or crnciiso, rumors, ASSIGNOR 'ro INTERNATIONAL HABVESTER COMPANY, a oonPoaArIoN or NEW JERSEY.

Specification of Letters Patent;

'r'atenteci April 3, 1906.

Application and October 22,1904. serial No. 229,518.

To (all whom it m ay' concern: I

Be it known that I, HENRY JOSEPH Ponhash s citizen of the UnitedStates, residmg at Chicago, in the county of Cook. and

State of Illinois, have invented certain new and useful Improvements in alve-(Iontrolling Mechanism for Gas-Engines, of which the following is a specification, reference being' had to the accompanying drawings, forming a part thereof. My invention relates to gas-engmes'bev longing to that class commonly called four- 1 cyole,. whereina rearward movement of the piston operates to draw in a charge of the exof said piston and. ignited at the second rearward movement of the same and the exha'ust- Valvelopened duringits second forward move- 'ment.

The object of the invention'is to provide means for preventing the opening of the inletvalve during a portion of the time when the exhaust-valve is open. v

In the operation of the above class of engines it has been found that in the absence of mechanism for performing the above-noted function when the explosion takes place and the piston is moved thereby to a predetermined position and the exhaustvalve is opened/to permit the discharge of the spent gases the force of the exhaust will produce a partial vacuum in the cylinder sufficlent to cause the inlet-valve to open and admit ex plosive material which is thereby wasted, and the purpose of my invention is to cure that evil. The construction and erationof the in vention will be more clear y described in the specification and illustrated by the drawings accompanying this application. I

Figure 1 is a side view of so muchof a gasengine thought to be sufliclent to illustrate of a part of Fig. 1, and Fig. 3 is a detail of the locking-lever.

Like. reference numerals represent like parts throughout the various views.

4 represents the engine-cylinder, and 5 the cylinder-head secured thereto.

6 is the exhaust-valve, operating to open'or close the port 7.

Fig. 2 is a sectional elevation.

I close the port 9; v

10is the stenrof the exhaust-valve, 11 is f the stem of the inlet-valve, each being mounted in the cylinder-head and adapted to slide relative thereto. Said v-alve-s-temsproi ject outsid e'the cylinder and have collars 12 ;and 13 securedthereto, respectively, and

I coiled springs 1a and 15 operate'between the collars.l2 and 13 and the surface of. the head 5 to keep'the valves normally closed/@- Upon thecylinder-head 5 is mounted a rocking lever 16, having one end resting against the. end of the stem 10 of the exhaustplosive mixture through. the -mlet valve 5 which is compressed by the return movement valve and its opposite end.pivotallyconnected with one end of a reciprocating rod 17 as shown in Fig. 1. The rod 17 is caused to reciprocate by means of suitable. connect-ions with a movable partof the engine and is govl erned in its movements by any of the usual forms of mechanism for the purpose of moving it at predeteri'nined intervals. .lVhen the lever 16 is rocked upon its pivot in one direction, it forces the stem 1 0 of the exhaustwalve 6 inward and opens the eXhaust-port'for the emission of the spent gases.

Mounted upon the cylinder-head between the'valve-stem is a stud 18, and piv'oted at the outer, end of the said stud is a rocking lever19, having the two arms 20 and 21. The arm 20 is provided with ahooked end 22, and the arm 21 is connected to the stud 18 by the coiled spring 23, the function of the spring being to draw the arm 21 toward the stud and cause the arm. 20 to swing away therefrom.

Referring to Fig. 2, when the exhaust-valve is closed the collar 12 bears against the arm .21 and holdsthe arm'20 inward toward the stud 18 a vay from the Washer 24', that is n1 ter )osed )etwee-n the coiled spring and 'the collar upon the stem of the in et-valve; but when the exhaust-valve is opened the reaction of the springi23 causes the lever 19 to rock on its pivot, as shown by dotted lines in Fig. 2 and swing the hook portion of the-arm .20 under the washer 24, and thereby lock the' 8 is the inlet-valve, operating to open or valve. The inlet-valve'is'thlis Closed during nearly the whole closing movementof the exhaust-valve. v

I What I claim, and desire to secure by Let ters TBatent, is?

e g s engine, the combination of n .let and exhaustportsand valves operating to -open and close said Iports alternately, means for operatin said exhausbport valve, means unconnecte with said valve-operating means for holding the inletevalve positively closed, said means ada ted to engage with and be directly control ed by the exhaust-valve in moving toward itsseat;

'fi gme, the combmeticn'cf a cylmder, in et and exhau t, -t a Valves operating to open and close said ports alternately, means for 0 erating said exhaust.-

port valve, said va ves having projecting stems outside said cylinder, springs surround-v said stems and operating to hold said vaives a ainst their seats, a two armed lever mounte to vibrate between said valve-stemsg independent of said valve-operating means i one arm of said lever engaging the inlet-valve to hold it positively closed when the exhaustvalve is open, and the other arm of the lever being engagedwith the stem of the exhaustvalve so as to.release said'inlet-valve when the eXhatist-valve'is moving-toward its seat; '3. In a gas-engine, the combination of a .cylinder, inlet and exhaust ports and valves operating to open and close said ports alter? nately, means for o'erating said exhaustport valve, said va ves having projecting steel? stems outside'said cvlinder, springs surroundsald stems an operative to hold said stud, one arm OliSfliCl lQVBIEGDgRging the' inlet-valve to hold ltpcsitl vely closed when the exhaust-valve. 1's open, and the other'arm of said lever being engaged with the stem of the exhaust-valve so as to release the inlet-valve when theexhaust-valve .is moving towar'dits seat. I

" '4. In avalve mechanism for gas-engines,

'the combination of a cylinder, inlet and exhaust ports communicating therewith, valves operating to open and close saidports alternately, means fore crating said egrhausta port 'valv'e, said vaves having. projecmg f stems outside said cylinder, springs. surroif in said stems an operatlveto hold said the other. arm of the lever enga ing with the stem of the exhaust-valve so as in release the in 'vaives against their seats, a stud between said stems, a two-armed lever pivoted on the inlet-valve when the exhaust-vs ve is moving toward its seat.

In witness whereof I hereto afiix my signature in presence of two witnesses.

V HENRY JOSEPH PonLEsAK. witnessest.

ROBERT DAILY, v CnAs. N. CHAMBERS.. 

